3.20a Family pedigree

1. If you had inherited a condition the circle would be filled in if you were female and the square would be filled in if you were male. 
2. These are often diseases but not always. 
3. The circle and squares represent phenotypes therefore these could be observed
4. the pedigree diagram shows that the female is affected yet the male is not. However, the child has not inherited the condition. 
5. The rest of the details can be observed in the diagram itself